After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Astronomers have discovered the raw ingredients of planets orbiting two infant stars, offering a glimpse into how new worlds take shape. These building blocks, called “pebbles,” are tiny solid chunks ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

There’s a rule of thumb that can come in handy when you hear about new planet discoveries from the Kepler space mission. If they’re talking about a handful of new worlds orbiting distant stars, it’s ...

Scientists have observed cryovolcanoes erupting on comet 3I/ATLAS — giving us a new clue about what's inside it.

New technology has been crucial in uncovering new planets and their secrets, and it will be crucial in finally beginning to uncover how peculiar, or not, our own planet actually is. Ewine van Dishoeck ...

Snapshots from six computer simulations illustrating the distinct tectonic regimes of terrestrial planets, including the newly discovered ...

Scientists have developed a new way to hunt for hidden signals of past life, and say it could assist in the search for extraterrestrial organisms on other planets.

NASA's Kepler mission, which has been searching the skies for Earth-like planets since 2009, has confirmed the discovery of a whopping 715 new planets orbiting around 305 stars. That bring the count ...

Reported discoveries of new planets picked up pace in the 20th century, but there was a problem. Jack Lissauer: “There were headlines in the ’60s, in the early ’80s, about first exoplanets discovered ...